OK - The reeds are surely different. Very typical with Vandoren. Out of a box of reeds 2 may play well 3 may be fine for practicing the rest probably actually do harm to your playing. This means that the reeds are screwing up your embouchure. Please remember this. Bad reeds can cause stinky embouchures.

So I go back to my post above, but you didn't respond to it and maybe you think it is wrong. But to get a great sound players have to do the long tones everyday. It's boring, but after years of this you will have the best sound around.

You are NOT breathing correctly. So we have 2 issues, the reeds and your breathing. One can begin to be fixed now and that is your breathing. The reeds won't ever get better, in fact they've gotten worse through the years. 40 years ago finding decent reeds was a lot easier. Now you get 2 excellent reeds per box of Vandorens on the average. Yes this sucks. But you can learn how to adjust reeds using reed knives, sandpaper, and get a book by Fred Ormand about adjusting reeds. You may be able to save a few more reeds per box. At first you will wreck some reeds, but that's part of the learning curve. Tell Fred that I sent you. Maybe he will give you a student discount. or pay for shipping, something like that. You can also play over the phone for him, maybe he will advise you. One of the finest teachers ever. Probably half of the symphony orchestra members in the USA studied with Fred at one point.